Ventilator for portholes and like openings



Dec. 1944- u w. w. CARVER 2,364,271

VENTILATOR FOR PORTHOLES AND LIKE OPENINGS Filed Juhe 12, 1942 g l 78 L40 74 IF"! Z6 2 8 p w m A i W ii ATTOREEY Patented Dec. 5, 1944 VENTILATOR FOR'PORTHOLES AND LIKE OPENINGS Walter W. Carver, Millburn, N. J.

Application June 12, 1942, Serial No. 446,815-

3 Claims.

This invention relates to an improved ventilator whichis adapted for use in a porthole of a vessel or similar opening and'which also serves as a shield or blackout device.

The invention is designed to provide a casing which is readily placed in a porthole and secured in place by means of the fastening devices now in common use in ships. The invention is charwhich part can be rotated and is provided with a wind scoopor wind shield. The object of the wind scoop is to direct air into the ventilator from the outside when the device is rotated to one position and to act to exhaust air from the inside when in another position.

The invention is designed also to provide a ventilating part comprising overlapping spaced elements which prevents the passage of light through the article at the same time that it serves as a ventilator and without regard to the rotative position for best ventilation purposes.

The invention also relates to certain details of construction which enable the easy and cheap assembly of the article and provides for a sturdy and reliable ventilator with a maximum capacity for the circulation of air.

The invention is illustrated in the accompanying drawing in which Figure 1 is a face view of the improved ventilator, showing one-half of the device. Figure 2 is a central vertical section of the ventilator shown in Figure 1.

The drawing shows by broken lines a part of the side Ill of a ship with the port-hole II. The ventilator includes a ring I2 which is bent over to form a flange l3. This ring and its flange forms a casing inside of which the portable parts are contained. On the outside of the ring I2 is a band M which is welded in place and has wings l5 which are slotted to receive the lugs I6 used for fastening the usual deadlight. Another flanged band I! is welded to the ring I 2 and is used for engaging the usual rubber gasket, l8 around the porthole'.

The ventilating part is made up as a separate part comprising discs I9, 20 and 2|. Each of these discs is spun or bent over to form a flange. The flanges are shown at 22, 23 and 24 extending from the discs I9, 20 and 2| respectively. These flanges are nested and all welded together and the flange 24 at the outer ends of the flanges. These assembled discs comprise a unit which fits loosely inside the ring l2 and is readily rotated by hand. A suitable handle is provided for rotating the unit and the preferred form is a handle acterized by a ventilating part in the casing 25 extending across the face of the disc l9 and spaced from it to enable one to grasp it. The ends of the handle are welded to the disc Hi. This form not only braces the disc l9 but is easily formed and operated in a dim light or in. the dark. The handle is extended laterally across the louvers as shown in the drawing. In the event of an outside explosive blast the handle prevents any fractured louvers from passing directly into the ship. It will engage the louvers, if they are fractured'from the plate or disc and propelled by a blast from the outside and divert them or stop them altogether. The disc l9 rests against the flange 13 of the ring l2 and the unit is held in place by a ring 26 fastened by screw or the like to the ring l2.

The discs are provided with inclined projecting louvers or blinds 21. These louvers are preferably pressed out from their discs and are disposed so that the louvers of one disc overlap those of the next adjacent disc and thus prevent the passage or the reflection of any light through the device.

On the outside of the unit is a wind scoop or wind shield 28'which projects a desired distance and extends part Way around the outer disc 2|. The wind scoop is used as desired by turning the unit by means of the handle 25. If the unit is turned so that the concave part of the scoop is toward the wind the air is deflected into and through the ventilator. If the unit is turned to put the convex side into the wind, the current will act to exhaust air through the ventilator. It will be evident that two portholes can be adjusted by turning the handles 25, that one wind scoop will direct air into the ship and the other will exhaust air out of the ship and a circulation can be readily established. The easy turning of the units enables the ready adjustment of them in case the direction of the wind changes or the course of the vessel is changed.

It will be evident that the number of discs and louvers can be varied according to requirements and that screens can be placed between any two of the discs in order to prevent insects passing through the ventilator.

The readily rotatable ventilating unit and its wind scoop coupled with the light-shielding construction of the unit combine to provide a simply operated and very efl'lcient black out device for ships and in other situations where they are applicable.

The advantages of assembly are obvious. The discs and their flanges which form a series of tray-like members are readily nested and when the flanges are welded at their assembled rims the result is a unit easily inserted in the casing or mounting formed by the ring I: or its equivalent.

In the absence of a wind scoop the position of the unit will govern the admission or exhaust of air, depending on the disposition of the louvers on the outside disc relative to the direction of the wind or the movement of the vessel. If the louvers are headed into the wind they will deflect air into the unit and on the other hand if they are in the reverse position they will tend to induce the air from the unit and consequently from the cabin or other compartment.

I claim:

1. A ventilator for portholes and the like comprising a circular casing adapted to form a'means for supporting a rotatable unit, a unit in the casing and adapted to be rotated, the unit comprising circular flanged discs forming tray-like members that are nested and with their flanges secured together, the flat faces of the disc hav ing openings and louvers arranged adjacent the openings, the louvers on one disc being staggered relative to the louvers on the other discs for preventing the passage of light through the unit, a. wind scoop arranged circumferentially on the rim of the unit and extending part way around the circumference and extending from the outside face of the unit a sufficient distance for directing air into the unit, a handle extending across the inside face of the unit with the ends of the handle secured to the rim of the inner disc and spaced therefrom to form a hand hold and for applying force to opposite edges of the unit and for bracing said unit, and means on the easing for securing it in a porthole or the like.

2. A ventilator comprising a casing for installation in a porthole, a rotatable unit in the casing, the unit comprising plates provided with louvers extending across the plates and so arranged as to prevent the direct passage of light through the unit, and a stiff handle extending across the inner louvered plate transversely relative to the longer dimension of the louvers and fastened at its ends to the rim of the plate whereby the handle can be utilized for rotating the unit and which handle also serves to prevent the direct passage of allsevered louvers in the event of an explosive blast.

3. A ventilator comprising a casing for installation in a porthole and adapted for supporting a, rotatable unit, a rotatable unit in said casing the unit comprising circular nested tray-like members having flanges fitting one within the other, the members having openings and louvers on. their faces, the louvers on one of the members being staggered relative to the louvers on the other members, the flanges of the members being secured together whereby they can be rotated in unison.

WALTER W. CARVER. 

